- Update CSS tokens to match WPCFTO values (sidebar #2c3e50, content #f0f3f5)
- Update Field component to 40%/60% 2-column layout
- Update Checkbox component to toggle switch UI
- Add GroupTitle component for visual section dividers
- Update TabNav component to WPCFTO sidebar styling
- Add MetaboxLayout component for 2-column wrapper
- Update TabPanel styles to match WPCFTO tab content area
- Fix Coupons page to use native WordPress post.php editor instead of modal
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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